[Question] Drawing in game?

[-Ryuk-]

Hi guys,

I seem to be having an issue with drawing.

I had it working 2 or 3 patches ago, but today it seems to fail -.-

I am trying to draw 'in' the world, for example drawing a circle at my location, when I move away I can see it in the distance. However in my test it looked like nothing was drawn. However when I added this code:

Device.DrawPrimitives(PrimitiveType.TriangleFan, 0, 32000);

to my DrawCircle function this happened:


this leads me to believe that its drawing, but in the wrong place.

I am not 100% sure what's wrong but ill post some code that I have below:

My Camera Struct:

    public struct CameraInfo    {
        public float Aspect;
        public float FarZ;
        public float FieldOfView;
        public Matrix3 Matrix;
        public float NearZ;
        public Vector3 Position;
        private uint unk0;
        private uint unk1;
        private float unk2;
        private int unk3;
    }

Drawing Addresses:

       
        internal class Drawing //16/08/2012        {
            internal static uint WorldFrame = 0xAD7A10;
            internal static uint ActiveCamera = 0x80D0;
            internal static uint AspectRatio = 0xAD74A4;
        }

My Draw Circle code:

        public static void DrawCircle(Location center, float radius, Color innerColor, Color outerColor, int complexity = 24, bool isFilled = true)        {
            var vertices = new List<PositionColored>();


            if (isFilled)
                vertices.Add(new PositionColored(Vector3.Zero, innerColor.ToArgb()));


            double stepAngle = (Math.PI*2)/complexity;
            for (int i = 0; i <= complexity; i++)
            {
                double angle = (Math.PI*2) - (i*stepAngle);
                var x = (float) (radius*Math.Cos(angle));
                var y = (float) (-radius*Math.Sin(angle));
                vertices.Add(new PositionColored(new Vector3(x, y, 0), outerColor.ToArgb()));
            }


            PositionColored[] buffer = vertices.ToArray();


            InternalRender(center.ToSlimV3() + new Vector3(0, 0, 0.3f));


            //Device.DrawPrimitives(PrimitiveType.TriangleFan, 0, 32000);
            if (isFilled)
                Device.DrawUserPrimitives(PrimitiveType.TriangleFan, buffer.Length - 2, buffer);
            else
                Device.DrawUserPrimitives(PrimitiveType.LineStrip, buffer.Length - 1, buffer);
        }

I am not sure if this is enough to help me along. As it worked before I am quite confident that the drawing code is fine(but ugly xD), I think its my Camera Struct.

Also, I should point out that I probably found a lot of this code here on OwnedCore.

Thanks

[miceiken]

    public struct CameraInfo
    {
        uint unk0;
        uint unk1;
        public Vector3 Position;
        public Matrix3 Matrix;
        public float FieldOfView;
        float unk2;
        int unk3;
        public float NearZ;
        public float FarZ;
        public float Aspect;
    }

[-Ryuk-]

    public struct CameraInfo
    {
        uint unk0;
        uint unk1;
        public Vector3 Position;
        public Matrix3 Matrix;
        public float FieldOfView;
        float unk2;
        int unk3;
        public float NearZ;
        public float FarZ;
        public float Aspect;
    }

Thanks!

Seems to work +Rep

[Master674]

<something used to be here... its gone now>

[-Ryuk-]

Did anyone of you get depth collision working? Doesn't seem to work for us :c

depth collision = clipping of drawn stuff by wow world objects (like if its behind a tree etc)

Nope, It still shows through the tree =/

[Master674]

<something used to be here... its gone now>

[Bananenbrot]

Depth testing works, if you hook the right function and perform your drawing there. I tracked that down to what I named RenderBackgound. It's called from CWorldScene::Render.

[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
private delegate void RenderBackgroundDelegate();

Currently (4.3.4.15595) located at base + 0x2532E0.

[Vandra]

Depth testing works, if you hook the right function and perform your drawing there. I tracked that down to what I named RenderBackgound. It's called from CWorldScene::Render.

[UnmanagedFunctionPointer(CallingConvention.Cdecl)]private delegate void RenderBackgroundDelegate();

Currently (4.3.4.15595) located at base + 0x2532E0.

Thanks for this ;p

[-Ryuk-]

You can also do with using LoS:

Just tested:



EDIT:Bananenbrot are you sure you are correct? when I detour base + 0x2532E0 my detour is never fired.

EDIT 2: forgot to apply the detour -.-

[Master674]

<something used to be here... its gone now>

[Bananenbrot]

Remember that the hook is called before your EndScene hook. Which means that you have to access state from the previous frame, which isn't there when you just started the bot.

[Master674]

<something used to be here... its gone now>

[-Ryuk-]

Which variables do you set before rendering?

Off Topic: Please check you WoW+ PM box

[Bananenbrot]

Which variables do you set before rendering?
I managed to draw it behind the whole world, so it renders behind the hills even though its way more near to me

You should do your rendering before you call the original function... and I don't set any specific variables, but you should leave out the first tick, so have some initial state (objectmanager, etc) to work with.

[Master674]

<something used to be here... its gone now>